column spiral spring 圆柱螺旋弹簧
spiral wire column [分化] 螺线精馏柱
spiral column 螺旋形塔
spiral shaped column 释义螺旋形柱
The utility model relates to a rotary-vane vacuum pump, which provides a column spiral torsional spring which is used for replacing a column spiral compressing spring.
本实用新型涉及旋片式真空泵，提供一种圆柱螺旋扭转弹簧，用它取代圆柱螺旋压缩弹簧。
With spiral hoops strengthen column can raise transshape capacity of vertical reinforcement and concrete when the columns are destroying.
用绕丝加固柱可以提高柱破坏时纵筋和混凝土的应变。
应用推荐